SpeakMouthWords was describing the origin of the white bars shown here (i.e. originally separating gifs).
These style gifs came later (i.e. gifs with 3d effect from the addition of the bars), integrating the white bars that had come to be expected from Tumblr posts.
These style gifs came later (i.e. gifs with 3d effect from the addition of the bars), integrating the white bars that had come to be expected from Tumblr posts.